Hi Folks,

I have an issue with shown names on SP, i think is missconfiguration, will be very appreciated if someone can help me

I have a forum with around 40.000 users… is logical that some users have the same name, I would like to let them show this “display name” like they want, but it i put that option it says that someone is using that display name, so only one user can have that name… 

what should i put here?